Mobile application backend jobs

I'm currently experiencing some problems with my Spring Boot and database backend, namely (but not exclusively), data inconsistency and significant performance issues. • Data Inconsistency: There's a rampant issue of missing and incorrect data circulating within the system. This issue impacts the integrity of the entire project and lowers its efficiency. I am seeking a professional who can help identify the source of the inconsistency and implement a permanent fix. • Performance Issues: I am dealing with certain performance issues, specifically very long database queries. Additionally, the task reassignment isn't functioning as it should, and data entry is also compromised. Ideally, I'm looking to enlist the services of a professional who possesses a...

I'm currently experiencing some problems with my Spring Boot and database backend, namely (but not exclusively), data inconsistency and significant performance issues. • Data Inconsistency: There's a rampant issue of missing and incorrect data circulating within the system. This issue impacts the integrity of the entire project and lowers its efficiency. I am seeking a professional who can help identify the source of the inconsistency and implement a permanent fix. • Performance Issues: I am dealing with certain performance issues, specifically very long database queries. Additionally, the task reassignment isn't functioning as it should, and data entry is also compromised. Ideally, I'm looking to enlist the services of a professional who possesses a...

I'm seeking an experienced full stack .NET developer well-versed with Angular to build a desktop e-commerce application. Key requirements: - Full stack .NET developer - Proficient in Angular for frontend development - Experience with desktop application development Your primary objective will be to develop a user-friendly, efficient, and scalable e-commerce platform. Prior experience with similar projects will be highly valued. Ideal skills and experience: - Expertise in .NET framework - Proven track record in Angular frontend development - Experience in developing desktop applications - Good understanding of e-commerce platforms

As the driving force behind this innovative Fintech project, I'm in need of talented individuals with precision in both web and Android application development. Specific tasks for the web developer include: - Crafting a beautifully designed and functional website layout - Building a powerful and reliable website backend - Incorporating an effective user authentication system In addition to this, the Android application developer should be capable of: - Implementing a user registration and login system - Delivering push notifications - Installing in-app purchase functionality The main purpose of this project is to create an efficient Fintech application that provides loans and offers other valuable financial services. The ideal candidate(s) should posse...

As a project owner, I'm in need of a proficient backend developer chiefly for the deployment of a Python Django project. This includes: - Setting up server and database - Deploying the project using both Nginx reverse proxy and Apache - Enhancing backend performance The best candidate should offer rich experience in Python Django project deployment as well as server setup and optimization. There won't be any need for coordination with other teams or members. Hence, the ability to work independently is crucial. Please remember to include your relevant experience in your application.

I have a website which allows customers to order food online but need to make an app from it for Android Google Play and Apple IOS Hybrid seems to be the most cost effective choice NO RIP OFF MERCHANTS PLEASE I CAN SMELL YOU FROM ANDROMEDA GALAXY NO MIDDLEMEN SCAMMERS I WORK DIRECTLY WITH DEVELOPERS ONLY DO NOT BID ON MY JOBS IF I HAVE REFUSED YOU BEFORE No time wasters Serious skilled workers only a meeting call will be absolutely essential to go over the details of the job. Note i have multiple apps needing done but all follow the exact same website structure only the name /address and icon will change basic details

I need a professional web and mobile developer to create an innovative e-commerce platform for hotel rentals. The project requires: - Creating a user-friendly, aesthetically pleasing website and mobile application - Incorporating secure payment gateways and booking systems - Implementing a social networking element to allow users to share experiences and recommendations within the platform Ideal candidates must be able to provide detailed project proposals, showcasing relevant experience in e-commerce and social networking app development. Proficiency in both iOS and Android platforms is a must.

I'm looking for a professional programmer, proficient in Python to craft a script. This script is for the main purpose of finding mobile numbers, identifying their carrier, and matching this information with corresponding zip codes. This process is vital for my verification purposes. Not only this, but your script must provide these details in a CSV file output format. Key requirements are: - Extensive knowledge and experience in Python - Experience in number location and carrier identification script writing is a plus - Knowledge of data presentation in CSV format This task requires high attention to detail and a strong understanding of number location matching technology. If you meet this description, I'm excited to hear from you.

I'm in search of a skilled software engineer to help develop a new web application. The ideal candidate should have proficiency in Java, Python and C++, as well as experience in full-stack development. Key responsibilities include: - Developing a new web application from scratch - Integration of user-facing elements with server side logic - Building reusable code and libraries for future use - Ensuring the technical feasibility of UI/UX designs - Optimizing the application for maximum speed and scalability Skills and experience required: - Proficiency in Java, Python and C++ - Full-stack development experience - Strong understanding of web development technologies and concepts - Familiarity with Agile methodologies - Excellent problem-solving skills - Good comm...

I'm in need of an expert React and Vue Js Developer who can take my website and mobile app to the next level. We already have base ready but we need to enhance the project in mobile app and website. Key Responsibilities: - Developing interactive elements to keep users engaged. - Creating a user-friendly navigation system, ensuring a seamless experience. - Integrating social media platforms to help users stay connected. - App is already created in Flutter but few features are to be added - Backend CMS Vujes + Laravel Skills and Experience: Ideal candidates should have strong experience in react , vuejs development, user interface design, and social media integration. Experience with targeting diverse audience segments is also a big plus. They should also ...

I'm urgently seeking an experienced UX designer who can creatively bring my mobile app vision to life. The core function of the app remains undisclosed, making flexibility and adaptive thinking vital skills for this role. Key Requirements: - Proven experience in UX design - Familiarity with various mobile app platforms - Ability to create wireframes, storyboards, user flows, etc. - Strong problem-solving skills - Flexibility and adaptability to changes Time is of essence, hence, I need this project completed ASAP. Do ensure your bid accurately reflects the urgency of this task.

We are a dynamic startup, currently seeking an experienced React programmer to join our team in a long-term remote consulting role. The selected candidate will work closely with another full-stack programmer, contributing to the development of various applications, including SaaS. The various software will interact with a Node.js backend and the user interface will be designed on Figma. Responsibilities: - Ability to devise practical solutions independently, following discussions with the CEO/CTO. - Participate in video conferences as needed. - Actively collaborate with the programming team, including peer-reviewing code. Essential Requirements: - At least 2 years of experience with React. Applications without this experience will not be considered. - Experience in developing medi...

As a forward-thinking business, we're looking to have a replacement app developed for our Shopify store. This app will replace our current Tapcart app, providing our customers with a sleek, user-friendly, seamless mobile shopping experience. Key Features: - Product Catalog: The app should showcase our entire range of products, with easy-to-navigate categories, filters, and search functions. - Shopping Cart: A seamless and secure shopping cart is essential, facilitating worry-free transactions. - Push Notifications: Ability to send targeted push notifications, informing our customers about our latest offers and updates. - Integrations: The app needs to smoothly integrate with Wishlist, loyalty schemes, and various social media channels. Platforms: The replacement app needs t...

Create flutter application for send trade signal

I'm searching for a job portal website along with mobile apps. If anyone has a well-developed project they're interested in selling, please share the details.

Looking for experience MMORPG developer to customise a strategic game similar to Honor of Kings using open source / ready built game sourcecode, that integrated with NFT items and tokens. Pls reply the following 1. Are you an individual freelancer or agency? If agency, what's the team strength, skillset? 2. Pls show your works related to MMORPG game development. 3. What development language, technology, platform & blockchain you could work on? More details will be provided to shortlisted bidders.

Request for Proposal (RFP): Mobile Application Development Introduction: We are inviting proposals from freelancers, teams, or vendors to develop a comprehensive mobile application and a supporting website. This application is designed to cater to a diverse audience. The project will include features for content creation, management, and user engagement through intuitive interfaces. 1. Project Objectives: - Develop a dual-platform mobile application compatible with iOS and Android. - Establish a minimalistic website for administrative purposes and to serve as a marketing portal. - Provide a seamless user experience akin to popular media streaming services like Netflix. - Construct a scalable and secure backend architecture utilizing...

...English Speaking Able to Build a backend and a Trading bot Able to Build a Strategy and Work on Bugs. Test out the bot and Ensure it works perfectly. PROJECT DESCRIPTION. We want to Build a Crypto trading bot that Works on CENTRALISED EXCHANGE PLATFORMS including BINANCE, KUCOIN and BITMART. The Bot will support and manage both SPOT TRADING and FUTURES TRADING at once. MAIN BOT FEATURES. - Bot Should support Spot and Futures Trading - Users can Switch from Futures to Spot trading interface on the same UI - Good Trading UI to display Trades and Place trades - API Connectivity to Exchange platforms | BINANCE | KUCOIN | BITMART - BOT MUST SUPPORT More than 500k+ Users ACCEPTABLE DELIVERY FORMAT - Integration of Bot onto Our Wordpress Website backend - A Co...

...creating a mobile-based gaming platform centered around Strategy games. The project's primary focus will be on in-app purchases. Key Features: - Creation of a mobile gaming application specifically designed to host Strategy games - Implementation of a seamless in-app purchase system, ensuring smooth and secure transactions Required Skills and Experience: - Proficiency in developing mobile applications, with a particular focus on gaming platforms - Prior experience in implementing in-app purchase systems within mobile applications - A firm understanding of the Strategy gaming genre and its unique requirements - Knowledge of best practices in mobile game development, particularly in relation to monetization strategies - Capable of deliver...

Your job is to develop a RESTful API only, no website, no UI of any kind. The API would work something like GET After called, the API will return a JSON response that contains all the data from sample reports. In other words, this API would perform a similar AI based analysis of the given website URL and produce a JSON format response of that. The website is provided here as a sample of the report to produce, we are NOT using its API. In your bid, please specify what third party libraries and/or APIs you would use, such as what APIs from Huggingface, RapidAPI etc. I want this to be developed with PHP and/or Python. Pure PHP solution would be preferred.

...perfectly suited for the teenage demographic. This app will require: - Registration and login using FIDO2 authentication protocol - A well-structured node.js backend integration - Custom message push notifications for active user engagement - Local database integration for efficient data management The app should contain a seamless payment feature, promoting accessibility and ease of use. No need for messaging/chat feature, gamification elements or social media integration. Preferred Skills and Experience: - Proven experience in Android development - Profound knowledge of FIDO2 Authentication - Familiarity with Node.js backend development - Proficient in local database integration - Experiences in implementing custom message push notifications - Hands on experience w...

I'm seeking a seasoned freelancer to upgrade my Magento 2.3.1 website to a stable & supported version. The task requires not only th...customizations are well-integrated post-upgrade - preserving their functionality as conceived and constructed. Key Customizations To Be Maintained: - Theme modifications - Extensions integration - Custom modules development Ideal Qualifications: - Experienced in both frontend and backend development - Past experience in similar projects is a strong recommendation. Applicants are encouraged to bolster their proposals with proven instances of their experience. This will greatly assist my selection process. Proficiency in backend and frontend development skills is a firm pre-requisite, as these skills are fundamental to the successfu...

I'm in need of a skilled full stack developer to work on a project that involves connecting to AWS Bedrock and various APIs. The main goal is to provide a frontend that effectively work with AWS Bedrock and various APIs. How it work ? similar to GPT 1. Front end - text window user ask a question. The question will be sent to backend 2. The backend get the front end question and work with AWS Bedrock and various APIs to answer. 3. The backend will send few answers to the frontend 4. Front end will display the answer Key tasks will include: - Creating an intuitive, user-friendly GUI for AWS Bedrock (similar to GPT, it's a text input and text out put) - Ensuring effective visualization and management of data from various sources - Seamless integration o...

I have a WordPress site with a quiz using QSM Pluggin & Divi Theme that doesn't show on any mobile browser. Key Points: - Quiz is correctly showing on desktop view. - Quiz plugin is confirmed to be mobile responsive. I need a developer to identify and fix the issue and ensure the quiz displays properly on all mobile browsers.

...developer to review and optimise our Wordpress website for mobile devices. The majority of it is already mobile friendly, I just need someone to review pages and correct it if necessary. The key aspects of this job include: - Ensuring text readability: The text on our website must be easily readable and not get distorted or too small when accessed from a mobile device. - Optimizing image display: Images should load quickly and retain their quality on mobile screens. We would like to maintain some specific design elements on the mobile version of the site, including: - Our logo - Our color scheme - Call-to-action buttons I'm open to suggestions for how to implement these optimisations, and I'm particularly interested in ensuring that the ...

...will review the software specifications and UI mock-ups, develop a cross-browser mobile application from scratch, and lead the application testing effort. You'll work alongside a backend developer and a UI designer to ensure you create high-performing applications with a smooth user experience. Roles and Responsibilities · Designing, developing, testing, maintaining, and deploying software in the Flutter framework and Dart language. · Developing and implementing user interface components by following well-known Flutter / Dart workflows and practices. · Participate in testing, quality assurance, and bug fixes as part of the CI/CD cycle. Qualifications and Requirements: · 3 to 5 years of experience developing mobile app...

...are working on a massive project. Currently its our first time with Upwork, so this would be phase 1 of our 3 part plan. Once we are through with it and have good experience with the dev, we will be putting up another order in late May or early June. - Should have hashtags support, like in Twitter/Insta, if we type hashtag, it should automatically convert it into a link (I will take care of the backend) - Autocomplete links: Shouldn't be difficult, but using regex or whatever you like, when you see a text URL auto convert it into hyperlink - Block tags: Auto block and remove certain tags, like someone is trying to insert scripts, block 'em. Preferrably Inline editor like Gutenberg. The current setup of everything being at top is a bit old fashioned though completely fun...

Current...candidate is a freelancer with a strong background in both front and backend development. Key Requirements: - Carryout a comprehensive audit to identify and understand issues - Fix identified issues that maybe causing broken links or error messages - Ensure optimal website performance While we appreciate freelancers with examples of past work and effective project proposals, what's most important to us is your experience. More specifically, we are seeking someone with notable experience in database optimization. This will be vital to ensuring our website runs efficiently and effectively. If you meet these qualifications, we'd love to hear from you. Please include details of your database optimization experience in your application. We look forward to...

...can create an application designed for project scheduling. Here's what I require: - Create a simple application that can handle new data entries and edits to current sharepoint date effectively. The input data will primarily include project dates through a share point list such as Baseline, Actual, and Forecast per project delivery item, and the duration between dates. Key qualifications: - Strong experience with PowerApps application development. - Excellent understanding of data structures, specifically those dealing with dates. - Prior experience in creating data entry systems. Attached is a screenshot of trying to create this, however i have not managed to get the formulas working with the complexity that I want. As the platform preference was skipped, ...

...proficient developer with experience in Android app development using Kotlin and familiarity with implementing passwordless login and FIDO2 authentication. I want a state-of-the-art Android app designed and built that uses FIDO2 registration and authentication against a Node.js backend with a MongoDB server. The successful freelancer should ideally possess the following skills and experience: - Profound understanding of Kotlin and Android app development - Previous experience with FIDO2 registration - Good grip on Node.js backend and MongoDB server - Familiar with implementing passwordless login Features to be included: - FIDO2 registration and passwordless login - Fingerprint recognition and Facial recognition capabilities in the authentication process Your expertise...

I'm in need of a talented developer proficient in both NodeJS and Golang for a backend system. Need to be very experienced , familiar with connecting to proxies and do background tasks . If it has knowledge on VAST and oRTB is an advantage !!! Must have experience with servers setups and optimization .

Seeking a skilled developer capable of quickly creating a robust asp.net-based e-commerce web application. The application demands the following features: - Product listing - Shopping cart - Payment gateway - Admin access to data Data should be stored in MS Access 2007. As the design is not yet finalized, possessing a keen eye for detail and themes that resonate with users will be highly valued. This project is time-sensitive and must be completed within 1 day. Proficiency in Visual Basics and experience in speedy application development is sought after.

We need someone with experience in supabase and react native/expo, the main task is develop the business logic that we need in the app. Features: Authentication Post Post detail Post filter Create offers for those post List of offers and filter View users profile and info List of transaction's Invoices list and detail Wallet like system (deposit and withdrawal) List of tables and...transaction's Invoices list and detail Wallet like system (deposit and withdrawal) List of tables and columns: Profile, 9 columns Homework, 10 columns Offers, 4 columns Review, 6 columns Invoice, 10 columns Wallet, 7 columns Transactions, 8 columns Bank list, 4 columns Subjects, 4 columns The app is done in react native, we have the project with all design implementation, just need to integrate wit...

I need a focus-driven developer to build a web application for my travel agency. The purpose of the application is to implement a backoffice system for managing bookings. The functionalities I'm aiming are: - User needs to enter details like Agency name, pax name, mobile number, pick up location, pick up time, date of flight travel, flight departure time, drop off location - Every day 3 buses are departing to airport. Say morning 8am, 1pm and 8pm. We need to get auto emails based on this bus timings of scheduled pax list and they take manually report with date/time filter. Ideal Skills: - Strong background in web application development - Experience in booking system or related is a huge plus - Fluency in database management, preferably SQL - Profici...

...issues in the layout of my WordPress website. The primary challenge is that the content is not displaying properly on mobile devices. I am in need of a skilled WordPress developer who can address these specific concerns: - Review the current layout and identify the key issues affecting mobile display. - Implement a redesign of the website's layout to ensure optimal mobile responsiveness without making significant design changes. - Ensure that the navigation menu remains functional and easy to use on both desktop and mobile devices. It is crucial that the chosen freelancer has a strong background in WordPress website development, particularly in optimizing layouts for mobile responsiveness. Experience with redesign work would be highly benefic...

As a company, we have created a Figma design for our impending WordPress site and are seeking an experienced wordpress developer to bring this design to life. We will provide all the necessary copy for the site. Ideal candidates would have demonstrable Figma-to-Wordpress experience, as well as ...Figma-to-Wordpress experience, as well as the ability to create responsive, user-friendly designs. Familiarity with implementing latest UX rich website designs and integrating brand elements smoothly into the site is also crucial. The site consists of: Home Product Pages Solution Pages Landing page Company Request a Demo Search Page (must integrate with the separate wordpress blog site) Backend Development Contact Forms Integration with HubSpot Book Demo (calendly) SEO Optimizatio...

make changes to footer and make about us page mobile friendly

...listing on Wix. We are a new business and need someone tech-savvy, organized and efficient to support us. Key Responsibilities: - Product Listing: You'll be responsible for listing our products on Wix. While I don't have the product images and descriptions ready yet, I'll provide them as soon as they're available. Ideal Skills and Experience: - Experience with Wix: A good understanding of Wix's backend and how to effectively list products on the platform is key. - E-commerce Experience: Previous experience with product listing on e-commerce platforms is advantageous. - Excellent Communication: As my virtual assistant, you need to be in regular communication with me to ensure our listings are accurate and updated. Looking forward to finding the right c...

...the attached .docx it's better explained. * For this project, this is just meant to run on any given localhost machine as a project. I'm in need of a skilled developer to build an application for a project. The main focus will be on exploiting the 'Academic World' dataset, incorporating relational (MySQL), document (MongoDB), and graph databases (Neo4j) which will be provided. Key Functionalities: - See .docx (My Approach) Section This is a project-based task, so I don't think there's a need to implement complex user authentication or intricate access control. Candidates with experience in web-based application development using MySQL, MongoDB, Neo4j will be ideal for this project. Understanding of library management systems and dataset m...

I'm looking for a proficient individual with an established user base to test my productivity app on Android. Your role will be to download the app, have your 20 ready users test its performance and usability, and then leave a review on the app store. Key Responsibilities: - Immediate availability of 20 users for testing - Performance testing of the productivity app - Writing a good review on the app store Your feedback should focus mainly on the app's performance, functionality, and overall usability. I need 20 users to test it before its public release as per android. the review should be good for the company.

I'm in need of a Laravel expert who can help me with both front-end and back-end development. Key Responsibilities: - Frontend Development: The candidate should be able to translate my design and wireframes into a functional and user-friendly interface. - Backend Development: I need someone who can efficiently work on the backend of my project, focusing on robustness and optimization. Skills and Experience Required: - Proven experience in Laravel development is a must. - Proficiency in both frontend and backend Laravel development. - Strong experience in translating design and wireframes into responsive and interactive interfaces. - Understanding of best coding practices and optimization techniques. - Ability to work independently and meet deadlines. We can...

I'm currently in need of an experienced full stack developer who is proficient in both JavaScript and PHP. Key requirements: - Strong skills in front-end development, specifically using JavaScript. - Proven experience in handling backend development with PHP. - Knowledge of SQL is also important. - While not a strict requirement, familiarity with JavaScript frameworks such as React, Angular, or Vue and PHP frameworks like Laravel or CodeIgniter would be a big plus. - Experience with SSL implementation is a must, but there are no strict preferences as to the type of SSL to be used (Wildcard or EV SSL). Being able to pick the right SSL depending on the project’s needs will be part of your responsibility. If you're the kind of developer who is adept at managing the f...

Developing A Three-Tier Distributed Web-Based Application

Need a PHP backend developer to fix our backend. We have a server that our App uses for user to get data, and for Admin to manage data and users. Suddenly the backend has a bug and neither app nor admin can logon. We can access via FTP of course, but not via normal logon. Original developer is unavailable, so we need an expert to troubleshoot it. Hopefully it is a small bug. We have some info from tech support on the possible nature of the bug. We have already searched for malware but did not find any.

I am applying for an airline pilot training course and need a professional CV and cover letter. While I ...airline pilot training course and need a professional CV and cover letter. While I don't have any prior flying experience, I am looking to emphasize the following key qualities and skills in my application: - Leadership and Teamwork - Problem-solving and Quick Decision-making - Attention to Detail and Safety Awareness The ideal candidate for this job should have experience in aviation or a similar field, and be able to craft a CV and cover letter that effectively showcases my potential as a future airline pilot, I would love to take part in this training course. The ability to tailor the application to the specific requirements and expectations of this training c...

I'm seeking a talented web developer to bring a cutting-edge AI-infused platform to life. The ideal candidate will have proficiency in web development technologies like HTML/CSS, JavaScript, and Python Flask for backend development, as well as experience in deploying applications on Google App Engine. Key Requirements: - User Registration and Login: We'll need a smooth, secure system for users to create accounts and access the platform. - Integration with Third-Party APIs: The website should seamlessly communicate with external APIs to enhance its AI capabilities. The website's primary goal is to serve as an AI platform. Therefore, the incorporation of Machine Learning capabilities is essential. Your responsibility will be to ensure these features are not only funct...

I'm looking for a skilled and experienced developer that can build an app using cloudVision (ideally) for a proof of concept project. The app needs to have two main functionalities: - Scan an object: The app should be able to...WebXR experience: Upon scanning, the app should trigger a visual WebXR experience related to the scanned object in the users personal space. Ideal skills and experience for this job include: - Experience with WebXR development Immersive reality - Proficiency in cloudVision, ideally - Prior experience in building apps with advanced scanning capabilities - Strong understanding of Firebase for the backend - Ability to create a simple yet functional proof of concept - UNity and Unreal knowledge required When applying, I will send you the brief of the pr...

iOS developer for an alarm type application, must be able to work autonomously. I will provide the concept and some wireframes, the expectation is you will design and UI and workflow which fits the use cases I need. You must have a good understanding of how App store subscriptions work (), as we will need to implement that. do NOT apply if you are unfamiliar, you will be wasting your time I will not contact you outside of Freelancer, if you ask for it, I will find someone else. The app will be required to create several types of alarms with optional snooze, some metrics need ot be gathered. the alarm screen may need to display an image, do NOT apply if you are unfamiliar with

...search of a creative and experienced product designer to specifically design a digital product, a mobile app, from the ground up. The app is to be available on both Android and iOS platforms. Ideal Skills: - Extensive experience in mobile app design - Proficiency in designing for both Android and iOS platforms - Strong understanding of user experience design Your role will involve: Mobile App Design - Conceptualising an intuitive and user-friendly mobile app interface. - Developing app design to be compatible across both Android and iOS platforms. - Iterating the design based on user feedback and usability testing. In order to make the project a success, a designer with a strong portfolio in mobile app design, including projects where versatile de...

We are looking for a full-stack developer who is committed to developing an online marketplace inspired by the following websites: We would like a complete implementation, including both the backend and frontend. You may use any programming language or tool you prefer. However, we are leaning towards Node and Express for the backend and React for the frontend. The UI/UX designs will be provided in mockups. We would like to give priority to developers with prior experience with e-commerce/online marketplaces. GDPR knowledge is a plus. The main expected functionalities include: *Provider side: - Ability to create a listing with images and descriptions. - Ability to upload their online